Cunningham Park gives you the best of both worlds: 1st class professionally-crafted and maintained mountain biking trails and a 4 mile (round-trip) Greenway path for a relaxed bike in the woods. As long-time residents of Queens, we honestly had no idea we had such an amazing park literally minutes away from us and we credit our new bikes for the find.
The three levels of mountain biking trails will rock your world. "Easy" gives you a long fairly bumpless ride around the park. It is easy to follow the trail signs and stay on the path. "Medium" gets a little more adventurous with tons of rocks, fallen trees for jumps and challenging turns. "Hard" trails are the crazy ones with jumps, trees in the road and steep hills. As you can see, there is a trail here for everyone. It also does not hurt that the vegetation is ridiculously rich and you feel like you are biking in a jungle.
When you are tired after hours of mountain biking, relax on the 2-mile Greenway, a popular local walking/biking spot that is moderately crowded.
Tip: park in the nifty parking lot right off of Hollis Hills Terrace (make a right on Hollis while driving West on 73rd Ave) and you will be right at the start of the Greenway.
The terrain in hilly and may be challenging at times, but definitely manageable. As an added bonus, you reach the Alley Pond Tennis club at the end of the greenway, so you can score a quick game of tennis.
Overall, Cunningham Park gets an A grade for the mountain biking trails and a solid B grade for the other paved trails, including the Greenway connection to Alley Pond Park.